231504002045 has 8 divisors (see below), whose sum is σ = 277811306496. Its totient is φ = 185198865616.

The previous prime is 231504002033. The next prime is 231504002057. The reversal of 231504002045 is 540200405132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231504002033) and next prime (231504002057).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231504002045 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297017 + ... + 742446.

It is an arithmetic number, because the mean of its divisors is an integer number (34726413312).

Almost surely, 2^231504002045 is an apocalyptic number.

It is an amenable number.

231504002045 is a deficient number, since it is larger than the sum of its proper divisors (46307304451).

231504002045 is a wasteful number, since it uses less digits than its factorization.

231504002045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084011.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 231504002045 its reverse (540200405132), we get a palindrome (771704407177).

The spelling of 231504002045 in words is "two hundred thirty-one billion, five hundred four million, two thousand, forty-five".